:root{
    // 默认
    --nd-color-default:  #606266;
    --nd-color-default-2: #dcdfe6;
    --nd-color-default-3: #fff;
    --nd-color-default-4: rgba(96, 98, 102, .8);
    // 主题
    --nd-color-primary: #007bff;
    --nd-color-primary-2: #b3d8ff;
    --nd-color-primary-3: #ecf5ff;
    --nd-color-primary-4: rgba(0, 123, 255, .8);
    // 次要
    --nd-color-secondary: #17A2B8;
    --nd-color-secondary-2: #b3e0e8; // 浅色边框
    --nd-color-secondary-3: #e5f7fa; // 超浅色背景
    --nd-color-secondary-4: rgba(23, 162, 184, .8);
    // 成功
    --nd-color-success: #28a745;
    --nd-color-success-2: #c2e7b0;
    --nd-color-success-3: #f0f9eb;
    --nd-color-success-4: rgba(40, 167, 69, .8);
    // 警告
    --nd-color-warning: #ffc107;
    --nd-color-warning-2: #f5dab1;
    --nd-color-warning-3: #fdf6ec;
    --nd-color-warning-4: rgba(255, 193, 7, .8);
    // 错误
    --nd-color-error: #dc3545;
    --nd-color-error-2: #fbc4c4;
    --nd-color-error-3: #fef0f0;
    --nd-color-error-4: rgba(220, 53, 69, .8);
    // 信息
    --nd-color-info: #909399;
    --nd-color-info-2: #d3d4d6;
    --nd-color-info-3: #f4f4f5;
    --nd-color-info-4: rgba(144, 147, 153, .8);


    --nb-default-color: #374151;
    --nb-default-color-rgb: 55, 65, 81;
}